Piston cleanup

I little work with the 'new' pistons that i bought on the internet last year, made them look like new..

I polished the piston crown roughly to prevent premature carbon build-up

I also took of the piston rings and used an old broken ring from the melted piston , and used this to scrape out carbon build up, this is normal for 2-strokes, that the ring are filled with old burnt oil and that causes the rings to get stock. The ultrasonic cleaner helped a lot cleaning of the rest of the piston